在高压下通过操纵viologen激素度来进行压色和导电性调制
Qi Sui1, He-Chong Wang2, Yan-Yan Zhang1
1Key Laboratory of Surface &, Interface Science of Polymer Materials of Zhejiang Province, School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China.
Chemistry (Weinheim an der Bergstrasse, Germany)
|June 12, 2023
概括
改变viologen化合物中的分子结合会影响激素度和物质在压力下的特性. 交叉结合的生物体表现出更高的基态和独特的电阻行为,挑战了传统的导电理论.
科学领域:
- 材料科学 材料科学 材料科学
- 超分子化学 超分子化学
- 有机电子 有机电子
背景情况:
- 固体多功能材料的性能可以通过控制激素度来调节.
- 维奥基因是能够通过可逆电子转移 (ET) 产生基态的氧化还原活性分子.
- 外部刺激,如压力,可以诱导分子电子状态的变化.
研究的目的:
- 设计和合成具有不同分子结合系统的晶体生物化合物.
- 为了研究压力对激素度和平色色行为的影响.
- 探索分子结构,激素生成和压力下的电导率之间的关系.
主要方法:
- 合成两种具有明显的结合系统 (线性与交叉结合) 的晶体viologen化合物.
- 施加压力来诱导电子转移和基态生成.
- 作为压力的函数,测量激素度,平色反应和电阻.
主要成果:
- 与压力下的线性相结合对应物 (1-X) 相比,交叉相结合的维奥基因 (2-X) 呈现出明显更高的基因度和更敏感的平色色行为.
- 线性结合的1-NO3的电阻随着压力的增加而下降了三级.
- 意想不到的是,高激素度的2-NO3的电阻在压力下基本保持不变,这与预期相矛盾.
结论:
- 分子结合模式是调节基于viologen的材料中的基因度的关键因素.
- 在压力下的2-NO3中观察到的不变导电性挑战了对激素生成增强导电性的传统理解.
- 定制分子结合提供了一个合理的策略,用于调节外部刺激下的材料特性,包括电导率.
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